Home / 40,144.70-55,397.33-21,991.83

Finding the Fourth Proportional to 40,144.70, 55,397.33 and 21,991.83

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Solution

The fourth proportional to 40,144.70, 55,397.33 and 21,991.83 is: 30,347.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,144.70 : 55,397.33 = 21,991.83 : x
  2. Step 2: Convert to fraction form
    40,144.70/55,397.33 = 21,991.83/x
  3. Step 3: Cross multiply
    40,144.70x = 55,397.33 × 21,991.83
  4. Step 4: Simplify right side
    40,144.70x = 1,218,288,663.81
  5. Step 5: Solve for x
    x = 1,218,288,663.81/40,144.70
  6. Step 6: Final answer
    x = 30,347.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.